Banner for LabNotes
From Lab Notes
Contact Information
Forest Products Laboratory
One Gifford Pinchot Drive
Madison, WI 53726-2398
Phone: (608) 231-9200
Fax: (608) 231-9592
Email

 

You are here: FPL Home  / Information Products & Services  / Publications

Requested Product

Title: Multistep process to produce fermentable sugars and lignosulfonates from softwood enzymolysis residues

Source: ACS Sustainable Chemistry & Engineering. 4(12): 7225-7230.

Author(s)Liu, Yalan; Wang, Jinwu; Wolcott, Michael P.

Publication Year: 2016  View PDF »

Category: Journal Articles
Associated Research Project(s):   FPL-4706-3B

Abstract: The residual solids from enzymatic hydrolysis are usually burned to produce energy and have been explored as a feedstock for various products including activated carbon and lignin based polymers. These products require additional procedures unrelated to the existing biorefinery equipment. In the current study, we proposed successive sulfite treatments to utilize the enzymolysis residues for producing fermentable sugars and lignosulfonates. Two sulfite methods were compared as an initial pretreatment. It was found that the acid bisulfite treatment achieved higher hemicellulose removal (90%), while neutral sulfite resulted in higher lignin removal (50%) and a greater lignosulfonate yield (26.6 g from 100 g raw material). Overall, the acid bisulfite treatment resulted in 66% glucan conversion by enzymatic hydrolysis, whereas it was only 37% for the neutral sulfite method. In addition, the neutral sulfite pretreated wood reached 80% of the maximum sugar yield after 6 h of enzymatic hydrolysis, whereas it was 48 h for the acid bisulfite pretreated wood. The multistep treatment process achieved 84% total sugar conversion and 58% lignin removal with 32.4 g lignosulfonates being produced from 100 g raw materials. The results demonstrate that the multistep treatment process has a potential to maximize the yields of fermentable sugars and lignosulfonates.

Keywords: Acid bisulfite treatment; neutral sulfite treatment; lignosulfonates; sugars; enzymatic hydrolysis

Publication Review Process: Formally Refereed

File size: 1,024 kb(s)

Date posted: 10/06/2017

This publication is also viewable on Treesearch:  view
RITS Product ID: 88682
Current FPL Scientist associated with this product
Wang, Jinwu
Research Forest Products Technologist
  

Additional items that might interest you
View the video celebrating FPL's 100 years of public service in 2010, from the producers of the Greatest Good....view

Research Highlights from FPL....view

Termite Eradication: A search for the Holy Grail.... view

Moisture Management in Residential Construction Series videos...view

Wood Floor Systems in Residential Construction Series videos....view
- FPL's Mission and Strategic Plan -

FPL's mission is to identify and conduct innovative wood and fiber utilization research that contributes to conservation and productivity of the forest resource, thereby sustaining forests, the economy, and quality of life. ... ..more »

- FPL Research Emphasis Areas -
Advanced Composites

As an integral part of the FPL mission, we improve the long-term sustainability of our Nation's forests by creating valuable composite products from biobased materials ... ..more »


Advanced Structures

The FPL has been in the forefront of wood-frame housing research since 1910 and has long been recognized as a world leader in such housing-related areas as engineered wood ... ..more »


Forest Biorefinery

We all know the compelling reasons that the United States needs to reduce its dependence on fossil fuels. Historically, the greatest increases in energy demand have been for transportation fuels ... ..more »


Nanotechnology

A leader in wood products research for over a century, the FPL is positioning itself to become the lead Federal research facility for the application of nanotechnology in forest products ... more »


Woody Biomass Utilization

Forests in the United States contain a substantial amount of small-diameter, overstocked, and underutilized material.FPL research projects are exploring the potential of the small-diameter ... ..more »